Question about core 2 duo

Message boards : Number crunching : Question about core 2 duo
Message board moderation

To post messages, you must log in.

AuthorMessage
James Nelson
Volunteer tester
Avatar

Send message
Joined: 23 Mar 02
Posts: 381
Credit: 4,806,382
RAC: 0
United States
Message 760828 - Posted: 30 May 2008, 20:47:43 UTC

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian
ID: 760828 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 760843 - Posted: 30 May 2008, 21:07:42 UTC - in response to Message 760828.  
Last modified: 30 May 2008, 21:08:07 UTC

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian

OS's can misreport the number of cpus and the cpu speed...among other things....
Don't worry about it....just watch the crunch times......that's all that matters....
"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 760843 · Report as offensive
Profile JDWhale
Volunteer tester
Avatar

Send message
Joined: 6 Apr 99
Posts: 921
Credit: 21,935,817
RAC: 3
United States
Message 760876 - Posted: 30 May 2008, 21:49:35 UTC - in response to Message 760828.  
Last modified: 30 May 2008, 21:51:10 UTC

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian


The host you point to is a Core2 Duo running Darwin...
2 cores residing on a single CPU... reports as expected for this type processor.
ID: 760876 · Report as offensive
James Nelson
Volunteer tester
Avatar

Send message
Joined: 23 Mar 02
Posts: 381
Credit: 4,806,382
RAC: 0
United States
Message 760888 - Posted: 30 May 2008, 22:12:33 UTC - in response to Message 760876.  

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian


The host you point to is a Core2 Duo running Darwin...
2 cores residing on a single CPU... reports as expected for this type processor.


I thought that would mean 2 cores with HT giving 4 all together, don't core 2's support HT ?


ID: 760888 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 760894 - Posted: 30 May 2008, 22:31:52 UTC - in response to Message 760888.  

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian


The host you point to is a Core2 Duo running Darwin...
2 cores residing on a single CPU... reports as expected for this type processor.


I thought that would mean 2 cores with HT giving 4 all together, don't core 2's support HT ?



Nope.......a core 2 means 2 cores, no HT........
If you want 4 cores, ya gotta get an Intel Quad.......

It's two different worlds, AMD and Intel.......

"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 760894 · Report as offensive
archae86

Send message
Joined: 31 Aug 99
Posts: 909
Credit: 1,582,816
RAC: 0
United States
Message 760899 - Posted: 30 May 2008, 22:43:56 UTC - in response to Message 760894.  

Nope.......a core 2 means 2 cores, no HT........
If you want 4 cores, ya gotta get an Intel Quad.......

Actually, Intel thinks that Core 2 is the brand (marketing name) for an architecture level. What the reset of us call Conroe.

The "2", in Core 2 does not denote number of cores at all, that comes from Duo (2) or Quad(4). Marketing wants us to think it the second generation of "Core" architecture.

But I agree, the Conroe-generation design does not support hyperthreading. That apparently is meant to return in the Nehalem generation (doubtless with a new marketing name).

Terminology nitpicking aside, I agree with your response, a CPU with the Core 2 Duo designation should be expected to participate in BOINC terminology as number of CPUs:2.

ID: 760899 · Report as offensive
Profile arkayn
Volunteer tester
Avatar

Send message
Joined: 14 May 99
Posts: 4438
Credit: 55,006,323
RAC: 0
United States
Message 761061 - Posted: 31 May 2008, 2:41:15 UTC

Definitely an iMac, and not running V8 on it either.

ID: 761061 · Report as offensive
OzzFan Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Apr 02
Posts: 15691
Credit: 84,761,841
RAC: 28
United States
Message 761088 - Posted: 31 May 2008, 3:33:36 UTC - in response to Message 760899.  

Actually, Intel thinks that Core 2 is the brand (marketing name) for an architecture level. What the reset of us call Conroe.


But not all Core 2s are Conroes. There are Conroe2Ms (Conroe Ls), Allendales, Meroms, Woodcrest, Penryn, Kentsfield, Yorkfield and Wolfdales that are all Core 2 CPUs. Conroe is only a small part of the Core 2 family.
ID: 761088 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 761090 - Posted: 31 May 2008, 3:35:44 UTC - in response to Message 761088.  

Actually, Intel thinks that Core 2 is the brand (marketing name) for an architecture level. What the reset of us call Conroe.


But not all Core 2s are Conroes. There are Conroe2Ms (Conroe Ls), Allendales, Meroms, Woodcrest, Penryn, Kentsfield, Yorkfield and Wolfdales that are all Core 2 CPUs. Conroe is only a small part of the Core 2 family.

But they all crunch like madmen..............it's the floating point thingy......
"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 761090 · Report as offensive
John McLeod VII
Volunteer developer
Volunteer tester
Avatar

Send message
Joined: 15 Jul 99
Posts: 24806
Credit: 790,712
RAC: 0
United States
Message 761130 - Posted: 31 May 2008, 4:05:43 UTC

But he could have a dual socked MOBO with 2 Core 2 Duos on it. That would make 4 CPUs. If he has not changed the default for the allowed number of CPUs in a long time that could be 2 rather than 4 or, he could have intentionally have set to use 2 CPUs in this case.


BOINC WIKI
ID: 761130 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 761151 - Posted: 31 May 2008, 4:23:42 UTC - in response to Message 761130.  

But he could have a dual socked MOBO with 2 Core 2 Duos on it. That would make 4 CPUs. If he has not changed the default for the allowed number of CPUs in a long time that could be 2 rather than 4 or, he could have intentionally have set to use 2 CPUs in this case.


But.....but........there are always work arounds......I could have any of my rigs report that they had 32 cores.........
Would that just tweak the heck outta some folks.......

What was the line from the movie 'Swordfish'.......?
What the eyes see and the mind believes......
"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 761151 · Report as offensive
Profile Azzitude
Avatar

Send message
Joined: 10 Mar 08
Posts: 33
Credit: 1,832,287
RAC: 0
United States
Message 761185 - Posted: 31 May 2008, 6:34:13 UTC - in response to Message 761130.  

But he could have a dual socked MOBO with 2 Core 2 Duos on it. That would make 4 CPUs. If he has not changed the default for the allowed number of CPUs in a long time that could be 2 rather than 4 or, he could have intentionally have set to use 2 CPUs in this case.



Ummmm WHAT??????? dual Socket 775's? what board do you speak of?




ID: 761185 · Report as offensive
kittyman Crowdfunding Project Donor*Special Project $75 donorSpecial Project $250 donor
Volunteer tester
Avatar

Send message
Joined: 9 Jul 00
Posts: 51468
Credit: 1,018,363,574
RAC: 1,004
United States
Message 761245 - Posted: 31 May 2008, 11:36:07 UTC - in response to Message 761185.  

But he could have a dual socked MOBO with 2 Core 2 Duos on it. That would make 4 CPUs. If he has not changed the default for the allowed number of CPUs in a long time that could be 2 rather than 4 or, he could have intentionally have set to use 2 CPUs in this case.



Ummmm WHAT??????? dual Socket 775's? what board do you speak of?

THAT's what many have been hoping for.........
But I an not sure that the standard 775 processors are capable of running in tandem......they are not Xeons.......might be something at the base architecture level that prevents it........
"Freedom is just Chaos, with better lighting." Alan Dean Foster

ID: 761245 · Report as offensive
Profile zoom3+1=4
Volunteer tester
Avatar

Send message
Joined: 30 Nov 03
Posts: 65746
Credit: 55,293,173
RAC: 49
United States
Message 761426 - Posted: 31 May 2008, 19:32:37 UTC - in response to Message 760894.  

Just noticed this host as my wingman shouldn't he be running 4 cpu's instead of 2 Host
or is it because of his OS, I know nothing about debian


The host you point to is a Core2 Duo running Darwin...
2 cores residing on a single CPU... reports as expected for this type processor.


I thought that would mean 2 cores with HT giving 4 all together, don't core 2's support HT ?



Nope.......a core 2 means 2 cores, no HT........
If you want 4 cores, ya gotta get an Intel Quad.......

It's two different worlds, AMD and Intel.......

HT as in HyperThreading is what the OP was asking about, Core2 doesn't support HyperThreading, As this has nothing to do with AMD, As AMD has never done HyperThreading, Just HyperTransport which is totally different and is only a bus standard like pci or pci-e.
The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's
ID: 761426 · Report as offensive

Message boards : Number crunching : Question about core 2 duo


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.